"From the detail via a relation to the master data source" scheme was used in the previous chapters (filtering, sorting, and showing information). When you render a Master-Detail report, a different scheme "from master to detail" is used, i.e. the relation works in reverse order. For example, DataBand1 is placed in the report template. This band contains a text component with reference to a data column, which contains the category names. Then, when rendering a report, you will see a list of categories. The picture below shows a report page with the names of categories:

 

 

Suppose you want to compare each category from the list to the list of products. To do this, follow these steps:

Add DataBand2 to the report template;

Specify a data source that contains a list of products and the relation between data sources;

Select the Master component;

Put a text component with reference to a data column from the selected data source in the DataBand2. For example, on a data column that contains the name of the product.

 

And then, when rendering a report, each Master entry will be compared to a list of Detail entries. The picture below shows a diagram of a Master-Detail report: